Clamp



Patented Nov. 7.5. 192?.

rice.

HANS BBAUN, OF ZURICH, SWITZERLAND.

CLAMP.

Application filed December-23, 1926, Serial No.

This invention relates to a clamp, particularly for holding theshuttering employed in the erection 0:5 concrete columns and the like,and consists in the provision of'two rightangled overlapping memberseach of which has one arm formed with diagonal slits and the other withtriangular apertures arranged so that Wedges inserted through coincidingslits and apertures tend to force the members together.

Fig. 1 of the accompanying drawings represents a plan of the device,

Fig. 2, across-section on the line 2-2 o1 Fig. 1, and

Fig. 3, views showing the shape andcrosssection of the wedge.

The device is composed of two ri 'htangled members a and 5 adapted, whenplaced in an overlapping position shown in Fig. 1, to embrace theshuttering of a concrete column or any other suitable ob ject, and to heclamped to the same by means of wedges 0. For the reception of thewedges, the arms (.Z and (Z of the members are formed with diagonal,closely set slits a, and the arms and f, with triangular apertures gwhich are placed with their hypotenuscs in alignment with the slits c.The bands of slits on the arms (Z. (1 are wide enough to cover twoapertures on the arms 7, and coinciding slits and apertures 156,739, andin Switzerland December 31, 1925.

must therefore occur in every overlapping position of the two members.Coinciding slits and apertures form a more or less long trapezoidalgateway through which the wed es c can be inserted, and as the latterare forc d down, the frame formed by the two members will be contractedin a diagonal direction.

The wedges are preferably made of trapezoidal cross-section inconformity with the siiape oil' the gateways.

I claim:

1. A clamp comliirising two right-angled overlapping members each ofwhich has one arm tin-med with diagonal slits and the other withtriangular apertures, and wedges adapted to enter coinciding slits andapertures of said members so as to contract the enclosed space.

2. A clamp according to claim 1 wherein the triangular apertures havetheir hypotennses in alignment with the slits of the op posite member.

3. A device according to claim 1 wherein the wedges are of trapezoidalcross-section.

i. A clamp according to claim 1 wherein the slits are arranged closetogether and made long enough to span the space occu pied by twoapertures.

HANS BRAUN.

